Specifications

Weight
28.3 metric tons (62,390 lb)

Length
10.8 m (35 ft 5 in)

Width
3.1 m (10 ft 2 in)

Height
3.1 m (10 ft 2 in)

Crew
13 (Driver, 2 Gunners, 2 Loaders

Source:
http://en.wikipedia.org/wiki/M110_howitzer